Cream separator



0. KRENKE.

CREAM SEPARATOR. APPLlcATloN FILED sEPT.23`. 1921.

Patente Aug. 22,- i922.

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` ramasse;

rarest carica,

erro Keniaan, or roar Hamon, MICHIGAN, Assmann To nannnsr L. rownns, or'roar nunon, Mien-Isaia. e e f y f CREAM SEPARATOR.

Specification of Letters Pat-ent.

Application lerl September 23, 1921. Serial No.'502,779.

on the inside of the bowl, and having suitable inlet and outletopenings,l and means for rotating the bowl', for separating cream orbutter fat from milk, or the relatively light from the heavier particlesor portions of material to be operated upon.

The principal object of the invention is to provide a simple, economicaland eiiicient cream separator or centrifugal separating machine.

A further object of the invention is to provide a self-balancing bowlwhich is adapted to be automatically balanced by the automaticadjustment or movement of the superposed disks with relation to eachother and with respect to the bowl shell to balanced position, and whichis so constructed as to enable the separated cream on the inside of thebowl to reach and be discharged through the cream outlet lwithout beingdisturbed and agitated by and intermixed with either the separated milkor the incoming or whole milk passing into or being operated upon withinthe bowl.

Other and further objects of the invention will appear from thefollowing description and claims, and from an inspection of theaccompanying drawings, which are made a part hereof; i

The invention consists in the features, combinations of elements,details of construction and arrangement of parts herein described andclaimed.

ln the accompanying drawings Figure l is a view in central transversevertical section, taken through the axial center of a bowl constructedin accordance with my invention;

Fig 2 is a view in section taken on line 2 2 of Fig. l, looking in thedirection indicated by the arrows; and

Fig. 3 is a top plan view of the bowl, showing the` vmilk outlets, butwith parts broken away.

In constructing a cream separator cene trifugal separating machine invaccordance rat-@atea laag; aaaaaa with my invention, l provide a bowl'l which comprises in its construction a hollow bowl shell 2 havingcylindrical upright side walls 3, a base/l, a central axial hollow shaft5 vthe' lower end of which is 'fixed to the base by means of screwthreads 6 connecting the hollow shaft and base in threaded engagementwith each other, or by any desired ordinary or suitable securing means,and the upper vend of the hollowyshaft being se# cured in fixeddetachable relation to theupper bowl shell member or top ofi-'the bowlshell by means of a nut in threaded en-` gagement with the hollow shaftand located on the outside of and in engagement with the bowl shell headS which hasr an axial opening 9 therein through which the upper end ofthe hollow shaft extends, or to Awhich said shaftis secured in themannerdescribed, or by any ordinary or suitable securing means. i

Fixed to the periphery of the hollow shaft 5, andextending upwardly and'downwardly longitudinally thereof and projecting ra# dially from theperipheral face of said shaft are a plurality or series of radialaccelerator blades 10i` which are spaced apart uniformly around orcircumferentially of the shaft. These accelerator blades are, bypreference, curved outward and rearward in the direction of the outermargins or edges 11, or outward and rearward with respect to thedirection of rotation of the bladesand bowl when in'operation. The rearsides 12 of the blades are thus concaveQand adapted to admit and form aconduit for separated cream within the cream Zone'directly back of therear concave faces of the blades and betweenv the blades; and the hollowshaft is provided with a plurality of peripheral whole milk inletopenings 13. each of which is between a pair of adjacentspaced-apart`blades 10,

and communicates with the .upright axialA opening 14 in the hollowshaft, and in position to receive and'permit the flow of milk admittedinto the axial opening 14 in the hollow shaft. and discharge such milkrinto the interior of the separator chamber 15 formed by the bowl` andwhich encircles or surrounds the hollow shaft, and ycontains amultiplicity or series of dished or `truncatedcone shaped separatordisks or plates 16v which are located onthe inside of the bowl shell andseparator chamber in spaced-apart superposed relation to each other,with space' ing lii'g's 17 formed ena-nid locatedbetween the convex sideor face 18 of' each diskand the concave side 19 ot the next adjacentdisk,V respectiveiy, throughout theentire series of superposed disks.lThese spacing lugs may beform-edV by punching and bending each lug backagainst the face of the diskofl whichit may form an integral part, thusproviding an opening 20 adjacent to each lag yand through the peripheral."marginal portion of the disk of which such lugs each form yan integralpart. The openings 2O areadaptedto permit the passage of milktherethrough, or through the disks thusl disks.v These axial openings 21in the disks are each" somewhat larger 'in diameter than the-*hollowshaft, orthat portion oi' `the hollow shaftsurrounded 'by/such disks.the diameter of each openiirg 215- and :inner cirj cularGClgIe 01'perimeter which terms the boundaryormarginal. wall of such openingbeing sufficientlyin excess fot. the diameter of the hollow shaft orperipheral portion ot the hollow 'shaftencircled by`such inner perimeteror` inner circular edge' oliuch disks laterally ortransversely-with'respect to the hollowshaftand with respect to eachother to` balanced ordisk. yand bowl-balancing` position with the inneredges or perimeters of the disks in contact and 'engagementwith theperiphery ofthe hollow sha't't. and with the outer edges or peripheries23 ofeachand all of the series oit superposed.

separator disks out of contact with the inner face224cof the peripheralorouter side wall ofthe bowl or bowl shell. An annular periphera'lorcircumferential space Q5 is thus provided between-the .peripheries Q3 ofthe g disks. land the inner surface oif the #all or sha-ft encircled bvsaid-disks.y This annular periphery of the bowl. shell, at all times.-

even when the inner edges or perimeters ofthe disks are in contact andoperative engagement-with the periphery otthe. hollow space 25`formed'between the peripheries ot the disksand the adjacent innervsurface or inner*peripherieY `24; of the bowl `shell -forinsanu'nob'structed annular Vspace 25 alioresaidy which isadapted tofat alltimespermit the niphe'ralgedges'ofthe' disks andthe wall Aot the -bowlshelli even. 'when the ldisks1ere?'in balanced orbowl-dialancingposition and. with 'any orali` 'off said disks in.contact with r the hollow-shaft. .Each of the vdisks 1G lrnz-r1:

radial .notches QG elztendf'i'ig tromftheinner edge O1' perimeter@outward radially to ward Y' the periphery or the :y disk andconifmunica'tingwith the inner axial opening 2l axial center ott thehollow shaft or bowl than are'4 any of theouter edges 11-v ol the blades10.. The outer extremities 27 ot the notches 26 arealso much wider thanthe outeradjfa-y cent edges ol' the blades. 10., and are' at ail timesout ot" contact with and in iireelynioieable relationl to thev uprightouter edges of said: blades at all rpoints between the said eel-gres otthe bladesf 1.0 andthe peripheries oitV the disks. The. inner edges otthe disks 16, are thus permitted tov come into contact with theperiphery o 'l the yhollow shaft while. the radial` ext-rein pf2? ofeach notch 2() is yout otfcontact with the adjacent edge of. theCorrespending` radial blade 10, and while the peripheral vedfgfesofyeach, and all o'."v thesue perpo'sed separatordisks are out of Contactwithand spaced apartwith vrespect to the inner' surface otthefpcripheral wall-ol` vthe bowlwshell, and" while the vbowl shell anddisks are in bowl-balancingI position.` y

A topiixedf plate or g liner plate '28 is mounted in fixed relation tethe bowlshell in position'to entend between the top one of the seriesotrelatively adjustable separator disks .16,in position -toprovid'e aspace 29 between said. lfiner plate and the inner sur!` .tace'() of the.top wall 'of the bowl shell. The spaceior-passage 29 leadstrom 0rcommunicates withfthe peripheral. marginal portion oi the separator'chamberl 15 below said liner plate which is provided with milk outlet.'openingsil therethrough or in the outer peripheral margin thereofadapted to' permit the passage of skinnmilk from the periphery of .theseparator chamber or diskconitai'ning chamberiupward and inward betweentheliner plate 28rand the top wall of the bowl shell through passage 29,and out through skim-milk outlet passages v311 in the top .vofthebowlshell and over the rim ofthe flange 32 intov the milkv receptacle orskim'- milkcovei,-not shown.; 1.There is sufficient space 33 between thetop liner plate. 28 and the top disk4 lffnormallyto permit the disks 16to move. orsadj ust themselves relativel;v tofeach .other to.bowl-balancing posi tient landso thiatthe .series V*of separator disks16 `torm a 'flexible column,.and are adapted to rotatefwith; thebowlshellpbut with their peripheries-'at yall timesjout `of contact with'the outer peripheral wall of the vbowl shell.

.The .bowl isprovided with. an annular crea-m containing vv-yand creamdischarge chamber and passage 8e which surrounds.l

the lower portion ol thewhollow .shattf'and .communicates with the creamOutlet @1 4 d ,isf

CIY

as it is proper 15, and is located below the separator disks 16, andextends upward from the extreme bottom inner portion 35 of the bowl' andout-ward from a relatively small annular bottom cream chamber or annularcream chamber wall portion 3T in the direction of the bottom concaveside of thebottoin sepn arator disk of the series of disks 16, to anannular cream-chamber rim or marginal lip 38, which is formed, bypreference, by the bottom or base oll the bowl shell. T he annular' wall3970i the cream chamber 3/1 is, by preference conical or flaring, andextends upward and outward at an incline from the annular bottom ot saidcream chamber to the top annular 'rimv38' thereo'iz which encircles thehollow sha'tt 5 and is located above the level of the bottom outerperiphery of the bot-tom or lower separator disks 16 and below the leveloi the top or inner perimeter or edge oi the lowermost one ot saidseries of disks 16, and between the hollow shaft and the peripheralwalloit thelbowl shell, forming a tapered' or conical annular creamchamber the annular walls oit which extend downward and inward aroundthe `hollow shaft, and from the annulartop' rim 38 of said'taperedcream-containingchamber or bottom cream chamber porti n of the separatorchamber to the extreme bottom ol the chamber formed by the bowl bottonior base. rlhe top annular rim of this 'conv ical or lower annularcream-containing chamber portion S4 of the separator chamber is at ornear vtheouter annular margin of the lcream Zone, or cream-containingyportion oit the separator chamber, when in oper;

ation, and the accelerator blades 10 extend] downward into and radiallyacross said chamber portion 34;, so that the cream contained therein andwhich has been separated from the milk will move with the rapidlyrotating bowl shell, but, remaii'i separated from the incoming wholemilk entering the bowl through the axial milk-inlet passage 14C andradial inlet openings 13 in the hollow sha-ft, and Yfrom the separatedmilk within the rapidly rotating bowl, and the separator chamber formedthereby;

The bottom cream-containing and creamdischarging chamber 311 and itspreferably upwardly and outwardly inclined conical wall 39 and toprim'or margin 38 are lo cated below thev level of the bottom entremities or all ol the milk inlet openings,

and encircle the hollow shaitt below said openings and below thelevel orthe inner edge or perimeter ot the rlowermost one oi the series oisuperposed separator disks or plates 16; and the inner relatively smallannular bottom wall portion 3i' of the? ed conical shaft-encirclingbottom Y chamber thus formed should be, and in 'form oLt the deviceshown in the drawi; inside oiC or nearer the axial center oif sseparator chamberthan the inner extremities of any of themilk-discharging openings 25311, which are, by preference, vthe oppositeend or extremity of the bowl. The wall 39 of the 'conical annular creamchain ber 3a, and the annular top rim 88 of said conical. cream chamberportion of the separator chamber 15 thus form an upwardlyv and outwardlyinclined conical or annular baille or circular wall which, forconvenience and economy in construction, and in order to obtain theadvantages of simplicity and strength of construction, is made inoneintegral piece with the bowl bottom or base et, rather than in the formof a separate ring or annular bathe. outer downwardly and outwardlyinclined wall or conical surface 40 ofthe baille plate or upwardlyprojecting inner annular converging co'ncaveand convex' surfaces or wallportions'), i0 formed by the base, thus eX- tend between the cream inthe chamber -i inside of the rim 38, and the separatedv relativelyheavyk liquid or milk located outside ol2 the annular rim 38 of saidchamber 34, and tend to prevent the separated milk outs'ide oft the rim3S from entering thecream chamber 3a. The whole milk introduced into therapidly rotating bowl through the inletpassages la, and 13 is caused toflow outward between the separator disks 16 and in contact with thelower or concave surfaces or sides ci said disks to the periphery oitthe separator chamber and bowl; and the relatively light butter fat or'cream is caused to llow inward toward the axial center of' theseparator chamber andbowl and in contact with the upwardly and inwardlyinclined convex conical sides or upper surfaces o't'the disks 16, andtheconvex conical wall Ll-O Vformed by the base.v The incoming milk orrelatively milk will pass over the rim 38 and cream chamber 34 without'flowing into said an-.

nular bottom cream chamber, and without disturbing or becominglnternnxed with the The wall 89, rim 38 and` y heavy liquid is thuspermitted to pass over' and aCrOSsthe rim 355 ot the ,-,cream` in. saidvvannular creamy chamber from mar the .lower-or ybottom peripheralportion oit which the cream is discharged through the cream outletcontrolled by the. creamA screw 86 which is adapted to be adjustedinward or outward to control the degree olf/richness of the cream intheA usual `or ordinary manner.

The cream `outlet discharges into a cream cover or receptacle il., whichmay be oit any ordinary and well known or desired term.

The bowl is removablymounted upon and iii` fixed' relation ,to airupright vrotary spindle 4:2, the upper portion oit which extends into anaxial opening` i123 inthe hol` low shaft 5, and in concentric relationto the bowl shell, said opening 41:3 being below and separated `from the`milk-inlet openiiilgrfi in 'the upper endot the hollow shaft. Thespindle 4t2 is rotatively mounted and journaled in.suitablefbearingsinoludinfgY a bottom bearingnoty shown which may be of' any `ordinaryoi;'.suitable form, and a a sleeve yielding neck bear or transversely fifiiovable sha lit-eiicirclingibearingmembe'r le'mounted in; movable reylation to and eificircled-b. a stationar f bearingmember 45, and having'ya helical spring'r i6 connected atene end withthe sleeve lli and at theother end with the bearingA memlbei' 45, `and supported by the latter soas.

to permit and yieldingly resist the `lateral or transverse movement oitthe 'sleeve lli and spindle duringY the rapidA rotation of the latterwith the bowl' supported. thereby and rotative therewith. ylhe spindlehas av worm l? thereon or formed in one integral piece therewith, and isdriven or rotated by' means of aworin wheel i8 in operative en gagementwith ysaid worm and driven by a shalt i9 ]ournaled in suitable bearingsin the machine iframe 50, and operatively connected 'with' suitabledriving means which may be 'of any ordinary and well known or desiredtype, such as a crank adapted to be manuallyy operated, or gearmechanism or y other-connecting means adapted to be connected with andLdriven by a motor or other source of power,

l claim: 1 f

oi a rotaryv bowl shell 'forming a separator chamber provided with`inlet and outlet openings including a cream outlet, a series oitsuperposed annular truncatedcone-shaped separator disks locatedinside ofthe separator chamber and provided with spares be.

tween said disks,' and an inner annular baille wall encircling the `axisvof the bowl shell and located between said .axis and the,

outer peripheral wall of the separator chamber and bowl shell andforming aV cream chamber within and encircled by said annular innerbaille wall and with which said cream outlet 'communicates fl. ln acreamseparator, thecombination- Maase@ y2. ln-a cream separaton'thecombination oli a rotary bowl shell forming a separatorv chamberprovided with inlet and outlet openings including a cream outlet, saidbowl shell having opposite end walls and an outer peripheral wall, aseries of superposed annular truncated-cone-shaped Separator diskslocatedV inside of` the separatorchaniber and provided with spacesbetween said disks,and an inner annular bridle projecting inward on theinner side ot' one of said end walls ofl between said disks, and aninner annular baille wall encircling the. axis of the bowl shell andextending,r inward from an end wall and between said cream outlet andthe peripheral outer wall of the bowlshell and forming a cream-chamberwithin said baille and with which said creamoutlet communicates e. In acreamv separator, the combinaltion ofarotary bowl shell forming a sepa'-i'ator chamber provided with inlet and outlet openings including a creamoutlet, and having oppositeend walls and an outer peripheral. wall, aseries of superposed annular separator disks located inside of ltheseparator' chamber and encirclingthe axis of the bowl shell, andv aninner annular' baille on one oli' the end walls of the bowl shell and.extending inward between said cream outlet and the outer peripheralwall of the separatorchamber andbowl shell and forming a cream chamberwhich communicates'with the disk-containing portionof the separatorchamber and with said cream outlet.y 1 f ln a cream separator, thecombination ot a rotary bowlshell 'forming a separator chamber yprovided with inlet and outlet openings includingl a cream outlet,` ahollow shalt .inside ol' and in concentric relationtoI the axis oli. thebowl shell, a series ot superposed annular separator disks locatedinside ofthe separator chamber and encircling the hollow shaft and axisof `the bowl shell, and having spaces between said disks, and( an innerannular baiile encircling the hol low shaft and extending inward betweenthe hollow sha-i't and the peripheral wall of the bowl shell, andforming an annular cream chamberl between said battle and hollow shaft,said cream chamber being adapted to communicate with the disk-containingportion ot the separator chamber and with said cream outlet.

6. ln a. cream separator', the combination ci a rotary bowl shellforming a separator chamber provided with outlet openings includingmillr outlet and a cream outlet, and having opposite end walls and anouter peripheral wall, a hollow shaft in concentric relation to the aXiso't the bowl shell and provided with inlet openings communicating withthe interior of the separator chamber, a. series of superposed annulartruncated-cone-shaped separator disks located inside of the separatorchamber and encircling the hollow shaft and the axis of the bowl shell,and having spaces between said disks, and an inwardly pr jecting annularbattle wall portion on one of the end walls of said bowl shell andencircling said hollow shaft and forming an annular cream chamberencircling the hollow shaft and communicating with the disk-containingportion ot the separator chamber and with said cream outlet.

7. ln a cream separator, the combination ot rotary bowl shell forming aseparator chamber provided with outlet openings including a mill; outletand a cream outlet, and haring top and bottoni end walls and an outerperipheral wall, a hollow shaft in concentric relation to the axis otthe bowl shell and having its opposite ends connected with the top andbottom end walls ol the bowl shell, said hollow shait having`liquidinlet openings communicating with the interior ot the separatorchamber, a series ol' superposed annular truncated-cone-shaped separatordisks encirclingv the hollow shaft on the inside ot the separatorchamber, and provided with spaces between said disks, and an annularinner baille wall portion on the bottoni end wall ot the bowl shell andencircling the hollow shait and forming` a cream chamber between saidbattle wall and the hollow shaft, the top oi said battle wall and ot'the creamchamber i'ormed within the baille wall being below the level otthe inlet openings in the hollow shaft, said cream chamber communicatingwith the disk-containing portion of the separator chamber and with saidcream outlet.

S. ln a cream separator, the combination ol a rotary bowl shell 'forminga separator chamber provided with outlet openings including a millroutlet and a cream outlet, and having top and bottoni end walls and anouter peripheral wall, a hollow shaft in concentric relation to the axisot the bowl shell and having its opposite ends connected with the topand bottom end walls oit the bowl shell, said hollow sharlt havingliquid inlet openings communicating with the interior of the separatorchamber, and a series or superposed annular truncated-coneshapedseparator rlislrs encircling` the hollow shaft on the inside of theseparator chamber and provided with spaces between said dislts, saidbottom wall havinff an inner upwardly and ou wai-.illy inclined conicallaninilar wall portion encircling the hollow shaft and `lbrming thewalls ol an annular conical crea-.fn chamber r-.fhich encircles thelower portion ot the hollow shaft below the inlet openings in said.iollow sliatt and coni-- inunicates with 'the elisir-containing portionot the separator' chamber and with said cream outlet.

9. ln a cream separator, the combination ot a rotary bowl shell forminga separator chamber proi-.iided with liquid inlet and outlet openingsincluding a cream outlet, and having a top and bottom wall and an outerperipheral wall, a hollow sha'lt inside of and in concentric relation tothe airis ot the bowl shell, a plurality ci radial accelerator bladesextending longitudinally ot 'the hollow shaft and projecting outwardradially from the periphery ot the same, a series oi truncatedconeshapedseparator dislrs encircling the hollow shaft and said blades andprovided with spaces between said disks, the peripheral marginalportions of said separatordislrs being in supporting engagement andmovable transversely with respect to eacl other to balanced positionwith the outer peripheral edges of all ot' said disks out ol" contactwith and spaced apart Yfrom the peripheral wall ot the separator chamberand with the inner perimeters ol said dislrs adrqited to engage theperiphery ot' said hollow shaft, said hollow shaft acting to permit andlimit the movement ot each dislr to said balanced position, and aninwardly projecting annular baille wall portion on the inner side ot oneol the end walls ot said howl shell and encircling and 'forminganannular cream chamber in one end oit the howl shell and communicatingwith the disk- -ffontainingj portion oi the separator chamber and withsaid cream outlet, said cream chamber baille wall being located betweensaid cream outlet and the periphery of the separator chamber and bowlshell.

Signed at Port Huron, in the county of St. Clair and State oilhllichigan this 19th day ot September, i921.

OTTO KRENKE.

1Witnesses Gnn'rnuoii ENGLER, Dorus DEAL.

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